Google add a feature to Google Maps that lets you opt to share your location in (near) real time with your close friends and family. Now they’re fleshing out that info with another important little detail: your phone’s remaining battery charge.
It looks like this:
Wondering why anyone might care about the status of your battery?
If you try to ping someone’s location and their phone is dead, there’s not much an app can do. Most location sharing apps will just sit there and spin while they wait for some sort of response, leaving you to worry about all the reasons their phone might not be responding with a current location. Did they lose signal? Did someone steal their phone? Source Link: